Biohacker Bryan Johnson, known for his ambitious anti-aging regimen and past experimental blood transfusions, has revealed a diagnosis of autoimmune gastritis (AIG). This incurable condition causes the body's immune system to attack the stomach lining, potentially leading to nutritional deficiencies, anemia, and increased cancer risk. Johnson, who founded the e-commerce company Braintree before selling it to PayPal for $800 million, plans to research and address his diagnosis.

Johnson's "Project Blueprint" involves extensive daily monitoring of bodily functions, a strict vegan diet of 1,977 calories, and a regimen of 54 pills. His quest for longevity has garnered significant public attention, including a Netflix documentary titled 'Don't Die: The Man Who Wants to Live Forever.' He claims his efforts have resulted in metabolic health comparable to 18-year-olds and reduced his biological aging rate.

The development of AIG presents a stark challenge to Johnson's pursuit of biological immortality. While standard medical approaches focus on managing symptoms, Johnson's history suggests he will seek novel therapeutic interventions, potentially drawing from his extensive personal data collection and experimental methods. His public sharing of this diagnosis may prompt further discussion on the limits and risks associated with extreme longevity research.